Just like it says, I've got tunercats and have done a ton of tuning on this thing but right around 4K Rpm's the MAF maxs out. The fuel trim goes way low and the O2's are around 900. The car has no ***** after the maf maxs out. The car is in the sig and thanks in advance for any help .

 

You need to edit the PE vs RPM fields to add fuel after the MAF maxes out.

I would get yourself a wideband O2 as well, stock o2 sensors are known to be not good tuning tools.. With all the money invested, it is well worth the money for a wideband so you don't blow it up.

 

Simple fix: Take out the MAF, speed density tune.

 

Yep, pretty much what I was going to post.

Rich

 

Is this possible with forced induction?

 

Yes

 

Car says 93 ? Have you changed to a 94 up ecm?

 

Yeah I changed the PCM aong time ago before it was procharged other wise I would be having this problem right this minute, Trust me I'm kicking myself for ever selling off te 93 stuff.

 

You don't have to have a 93 PCM to do a speed density tune, just find a good tuner in your area. I just noticed your in ocala, I'm going to be moving there soon. And on that note, I would have Jeremy Formato do a speed density tune for you.

 

I think the point of him changing from the SD 93 stuff to the MAF 94+ setup is because of the whole "chip factor" as I like to call it. Some people don't want to deal with the hassle of burning chips.